Power trowel tool attachment



FIG. 1 is a perspective view of a power trowel tool attachment embodying our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof; and,

FIG. 4 is a side elevation view thereof.

The broken lines in the drawings illustrate portions of the power trowel tool attachment that form no part of the claimed design. 

CLAIM The ornamental design for a power trowel tool attachment, as shown and described. 